The dark miscellaneous fluid which inevitably occurs on the floors of venues where alcohol is served. Disco Juice manifests itself on anything that makes contact with the floor. A mixture of sweat, spilled alcohol occasionally other bodily fluids too. It is a sticky, often foul smelling and a mixture of dark grey/brown in colour.

After leaving the club my shoes were ruined by discojuice.
I fell over and my hands are covered in discojuice.
My feet are sticking there's so much discojuice on the dancefloor